According to a statement from IPMA, on the islands of Flores and Corvo, which make up the Western group of the Azores archipelago, the yellow warning for "sometimes heavy rainfall, which may be accompanied by thunderstorms" is in force between 06:00 local time (07:00 in Lisbon) and 13:00 on Monday.
For the Central group of the Azores, the islands of Faial, Pico, São Jorge, Graciosa, and Terceira, the same warning is valid between 12:00 local time on Monday and 00:00 on Tuesday.
On the islands of São Miguel and Santa Maria, which make up the eastern group of the Azores archipelago, the IPMA's yellow warning for rain, which could be heavy, will be in force between 00:00 and 12:00 local time on Tuesday.